PHYSICS · Multi-part · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
A thin glass lens has a focal length of f=10cm. A luminous object is placed on the principal axis of the lens.
(a) The object is located 25cm to the left of the lens. On your own paper, construct an approximate ray diagram with at least two principal rays to locate the image. Mark the point where the two rays intersect and estimate the image distance from the lens.
(b) Calculate the image distance using an appropriate quantitative relationship. Show all steps in your work and include units in your final answer.
(c) Compare the sign and magnitude of the image distance obtained in part (b) with the estimate from the diagram in part (a). Discuss how the two results are consistent with each other.